He craned his neck, looking up at the tank. How difficult could the climb be? And besides, it wasn't like he was scared of heights or anything.
By the time he was halfway up, Finn had decided that fear of heights was actually quite sensible. The steel frame was surprisingly rickety, and the duracrete ground below him looked all too solid.
But he knew that Poe wouldn't think twice about scaling the tank, and Rey... well Rey would have probably done something awesome with the force. He wasn't about to let down the Resistance, even if that meant his arms were aching and he was struggling to breath by the time he reached the top.

- Choose Your Destiny: A Finn and Poe Adventure